Lubricator.



A. L. KNUDSEN.

LUBRICATOR.

APPLICATION FILED APR. 19. 1915.

Patented Sept. 7, 1915.

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. l AUGUST L. KNUDSEN, 015 BOSTON, MASSACHUSETTS.

LUBRIoAroR.

Specification of Letters Patent.

Patented Sept. "1, 1915.

Application filed April 19, 1915. Serial No. 22,284.

Lubricators, of which the following is a full, clear, and exactspecification.

The object of this invention is theconstruction of a lubricator forelevator guides and like purposes which shall be simple andcomparatively inexpensive to manufacture, durable in use, and which willnot clog up nor drip.

Referring to the drawings forming part of this specification, Figure 1is 'a side sectional elevation of a lubricator embodying myimprovements. Fig. 2 is a perspective view of the movable memberthereof. Fig. 3 is a perspective view of the oil-applying device.

The numeral 1 designates the oil reser voir which is attached to theelevator by a suitable bracket 2, and is closed by a cover 3 which islocked in place by means of a threaded stem 4 turning in a fixed nut 5.The latter is held by being cast integral with the reservoir and thepartition 6 which with the reservoir wall composes an oil well 7. Gil isslowly conveyed from the reservoir to the well 7 by means of a wick 9,and from the well near its bottom extends a tubular stem or vent 10 forthe passage of the oil from the well to the delivery member or sleeve11. The latter is formed with a chamber 12 closed at its, outer end by ascrew cap 13 and having at its inner end an interior shoulder or flange14: slidably and rotatively fitting the tubular stem 10. A thimble 15loosely fitting the interior of the chamber 12 and screwed upon the endof the stem 10 serves to keep the delivery member 11 from being lost,especially since a helical spring 16 located within the chamber betweenthe screw cap 13 and the thimble 15 presses the delivery member awayfrom the reservoir.

The lower portion of the delivery member 11 is provided with a threadedtubular stud l7 communicating with the chamber 12 through a verticalduct 19 at the front end of the chamber, and an inclined duct 20 fromthe inner end thereof just in front of the shoulder 14. Upon the stud 17is screwed the oil-applier 21 one end of which is extended in front ofthe chamber 12.

This oil-applier has a small countersunk hole 22 through which the oilfrom ducts in communication therewith passes to the exterior surface 23,which is designed to be kept in contact with the outer edge of theelevator guide rail. The upper and lower terminals of the surface 23 aregiven bevels 24 to insure against catching upon the railjoints, and thelower side-edges of said surface are formed with lugs 25, slightlycurved as shown in Fig. 3, for engagement with the sides of therail-edge inorder to keep the oil-hole 22 central with respect to therail-edge. i

The purpose of the upward extension of the oil-applier is to make thepressure against the surface 23 by the guide-rail, central with respectto the chamber 12 and thereby to prevent the cramping of the same on thestem 10 which would occur were the pressure wholly in line with the stud17; for it should be remembered that, there is considerable play allowedbetween the elevator and its guide rails, and consequently betweenthestem 10 and its rail, both toward and from and laterally. The formeris taken care of by the spring 16, while the lateral displacement ispermitted by the swing of the delivery member 11, the lugs 25 being madevertically short and slightly rounded to permit such swing.

Oil from the reservoir is slowly but steadily transferred from the sameto the well 7 by capillary attraction, and from the well the oil passesthrough the tubular stem 10 to the chamber 12, whence it drips downtheduct 19 through the channel 18, tubular stud 17 and oil hole 22 tothe face of the oilapplier and the rail in contact therewith. Withoutthe countersunk mouth with which the hole 22 is formed, it would be muchless easy to convey the oil to the contacting surfaces.

Theoretically, the shoulder 14: should be sufficient to prevent theescape of oil from behind the thimble 15, but practically I find thatsuflicient oil will pass between the surfaces of said thimble andchamber 12 to overflow said shoulder and drip from the end of thechamber; but, by providing the conduit or duct 20 in addition to saidshoulder, any such escape and drip is absolutely impossible.

What I claim is:

1. An oiler for guide rails comprising a reservoir, a tubular vent outof direct communication with said reservoir, means for supplyingallmited amount of oil fromthe reservoir to Sflld' vent, a-sleeveshdable and said conduit.

2. An oiler for guiderails comprising a reservoir, a tubular vent out ofdirect communication withrthe reservoir, means for supply'nga limitedamount ofoil from the reservoir to the vent, a sleeve inclosing saidvent having a shoulder at its inner end-slidably fitting the vent, thesleeve having a downwardly outwardly extended conduit, and a. deliverynozzle attached to the outer end-ofsaidconduit. r

3. Anoiler for guide rails comprising a tubular ventdisp'osed forreceiving a limited supply of oil, a sleeve inclosing the vent having a'shoulderat itsinner end slidalply fitting the vent, the sleeve havingits outer end 1 closed and being formed with a downwardly and outwardlyextended conduit, a thimble attached to the outer'end ofthe ventslidably fitting the sleeve, a helical spring pressing between thethimble and the outer closed T end ofthe"sleeve, :anda delivery nozzleattached to the outerend of said conduit.

4. oiler for guide rails comprising a tubular vent' disposed forreceiving a-limited v supplyoztoil, sleeve inclosing the vent having ashoulder at its inner end slidably fitting the vent, the sleeve havingits outer end closedand being formed-with a downwardly andtoutwardlyextended conduit, a thimble attached to the outer end of said vent andslidably fitting the sleeve, an oil delivery, device attached to theouter end of said conduit, the latter. being connected both with theouter section of the sleeve-chamber and also with the inner end-thereofnearsaid shoulder.

5. An oiler for guiderails comprising a tubular vent disposed forreceiving a limited supply of oil, a sleeve shdableon said vent having adownwardly and outwardly ex- 16th day ofApril, 1915.

' AUGUST L. KNUDSEN;

Copies of vthis patentimayi be obtained forfive cents each, byaddressing the commissionenofllatents. 4 1 i r 1 Washington, D. G.

